diff --git a/lib/process_escape_sequence.c b/lib/process_escape_sequence.c
index 1bfd070..3747da1 100644
--- a/lib/process_escape_sequence.c
+++ b/lib/process_escape_sequence.c
@@ -18,6 +18,7 @@
  */
 #include <common.h>
 #include <fs.h>
+#include <globalvar.h>
 #include <libbb.h>
 #include <shell.h>
 
@@ -57,6 +58,11 @@
 			case 'h':
 				i += snprintf(dest + i, destlen - i, "%s", barebox_get_model());
 				break;
+			case 'u':
+				if (IS_ENABLED(CONFIG_GLOBALVAR))
+					i += snprintf(dest + i, destlen - i, "%s",
+						      dev_get_param(&global_device, "user"));
+				break;
 			case 'w':
 				i += snprintf(dest + i, destlen - i, "%s", getcwd());
 				break;